Fish tank decoration



FIG. 1 is a front elevational view of one embodiment a fish tank decoration according to my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is one side elevational view thereof;

FIG. 4 is another side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front elevational view of another embodiment of fish tank decoration according to my new design;

FIG. 8 is a rear elevational view thereof;

FIG. 9 is one side elevational view thereof;

FIG. 10 is another side elevational view thereof;

FIG. 11 is a top plan view thereof;

FIG. 12 is a bottom plan view thereof;

FIG. 13 is a front elevation view of a further embodiment of a fish tank decoration according to my new design;

FIG. 14 is a rear elevational view thereof;

FIG. 15 is one side elevational view thereof;

FIG. 16 is another side elevational view thereof;

FIG. 17 is a top plan view thereof; and,

FIG. 18 is a bottom plan view thereof. 

CLAIM The ornamental design for a fish tank decoration, as shown and described. 